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<title>[GlotPress][1032] trunk: On import, detect when a string has minor changes and keep the original translations.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://glotpress.trac.wordpress.org/changeset/1032">1032</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://glotpress.trac.wordpress.org/changeset/1032","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>ocean90</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2015-05-01 15:12:09 +0000 (Fri, 01 May 2015)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>On import, detect when a string has minor changes and keep the original translations. Existing translations will be marked as fuzzy.

props yoavf.
fixes <a href="http://glotpress.trac.wordpress.org/ticket/263">#263</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkgpincludesroutesprojectphp">trunk/gp-includes/routes/project.php</a></li>
<li><a href="#trunkgpincludesthingsoriginalphp">trunk/gp-includes/things/original.php</a></li>
<li><a href="#trunkscriptsimportoriginalsphp">trunk/scripts/import-originals.php</a></li>
<li><a href="#trunktteststests_thingstest_thing_originalphp">trunk/t/tests/tests_things/test_thing_original.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkgpincludesroutesprojectphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/gp-includes/routes/project.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/gp-includes/routes/project.php      2015-04-30 10:04:00 UTC (rev 1031)
+++ trunk/gp-includes/routes/project.php        2015-05-01 15:12:09 UTC (rev 1032)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -110,8 +110,14 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        return;
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                list( $originals_added, $originals_existing ) = GP::$original->import_for_project( $project, $translations );
-               $this->notices[] = sprintf(__("%s new strings were added, %s existing were updated."), $originals_added, $originals_existing );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         list( $originals_added, $originals_existing, $originals_fuzzied, $originals_obsoleted ) = GP::$original->import_for_project( $project, $translations );
+               $this->notices[] = sprintf(
+                       __( '%1$s new strings added, %2$s updated, %3$s fuzzied, and %4$s obsoleted.' ),
+                       $originals_added,
+                       $originals_existing,
+                       $originals_fuzzied,
+                       $originals_obsoleted
+               );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                $this->redirect( gp_url_project( $project, 'import-originals' ) );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span></span></pre></div>
<a id="trunkgpincludesthingsoriginalphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/gp-includes/things/original.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/gp-includes/things/original.php     2015-04-30 10:04:00 UTC (rev 1031)
+++ trunk/gp-includes/things/original.php       2015-05-01 15:12:09 UTC (rev 1032)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -5,7 +5,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">        var $field_names = array( 'id', 'project_id', 'context', 'singular', 'plural', 'references', 'comment', 'status', 'priority', 'date_added' );
</span><span class="cx" style="display: block; padding: 0 10px">        var $non_updatable_attributes = array( 'id', 'path' );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-    static $priorities = array( '-2' => 'hidden', '-1' => 'low', '0' => 'normal', '1' => 'high' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ static $priorities = array( '-2' => 'hidden', '-1' => 'low', '0' => 'normal', '1' => 'high' );
</ins><span class="cx" style="display: block; padding: 0 10px">         static $count_cache_group = 'active_originals_count_by_project_id';
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        function restrict_fields( $original ) {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -51,8 +51,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">        function by_project_id_and_entry( $project_id, $entry, $status = null ) {
</span><span class="cx" style="display: block; padding: 0 10px">                global $gpdb;
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $entry->plural  = isset( $entry->plural ) ? $entry->plural : null; 
-               $entry->context = isset( $entry->context ) ? $entry->context : null; 
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $entry->plural  = isset( $entry->plural ) ? $entry->plural : null;
+               $entry->context = isset( $entry->context ) ? $entry->context : null;
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                $where = array();
</span><span class="cx" style="display: block; padding: 0 10px">                // now each condition has to contain a %s not to break the sequence
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -74,67 +74,188 @@
</span><span class="cx" style="display: block; padding: 0 10px">                global $gpdb;
</span><span class="cx" style="display: block; padding: 0 10px">                wp_cache_delete( $project->id, self::$count_cache_group );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $originals_added = $originals_existing = $originals_obsoleted = 0;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $originals_added = $originals_existing = $originals_obsoleted = $originals_fuzzied = 0;
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                $all_originals_for_project = $this->many_no_map( "SELECT * FROM $this->table WHERE project_id= %d", $project->id );
</span><span class="cx" style="display: block; padding: 0 10px">                $originals_by_key = array();
</span><span class="cx" style="display: block; padding: 0 10px">                foreach( $all_originals_for_project as $original ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        $entry = new Translation_Entry( array( 'singular' => $original->singular, 'plural' => $original->plural, 'context' => $original->context ) );
-                       $originals_by_key[$entry->key()] = $original;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 $entry = new Translation_Entry( array(
+                               'singular' => $original->singular,
+                               'plural'   => $original->plural,
+                               'context'  => $original->context
+                       ) );
+                       $originals_by_key[ $entry->key() ] = $original;
</ins><span class="cx" style="display: block; padding: 0 10px">                 }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                $obsolete_originals = array_filter( $originals_by_key, function( $entry ) {
+                       return ( '-obsolete' == $entry->status );
+               } );
+
+               $possibly_added = $possibly_dropped = array();
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 foreach( $translations->entries as $entry ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        $gpdb->queries = array();
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        $data = array('project_id' => $project->id, 'context' => $entry->context, 'singular' => $entry->singular,
-                               'plural' => $entry->plural, 'comment' => $entry->extracted_comments,
-                               'references' => implode( ' ', $entry->references ), 'status' => '+active' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 $data = array(
+                               'project_id' => $project->id,
+                               'context'    => $entry->context,
+                               'singular'   => $entry->singular,
+                               'plural'     => $entry->plural,
+                               'comment'    => $entry->extracted_comments,
+                               'references' => implode( ' ', $entry->references ),
+                               'status'     => '+active'
+                       );
</ins><span class="cx" style="display: block; padding: 0 10px">                         $data = apply_filters( 'import_original_array', $data );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        // TODO: do not obsolete similar translations
-                       if ( isset( $originals_by_key[$entry->key()] ) ) {
-                               $original = $originals_by_key[$entry->key()];
-
-                               if ( GP::$original->is_different_from( $data, $original ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 // Original exists, let's update it.
+                       if ( isset( $originals_by_key[ $entry->key() ] ) ) {
+                               $original = $originals_by_key[ $entry->key() ];
+                               if ( $original->status == '-obsolete' || GP::$original->should_be_updated_with( $data, $original ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                                         $this->update( $data, array( 'id' => $original->id ) );
</span><span class="cx" style="display: block; padding: 0 10px">                                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                                $originals_existing++;
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        } else {
+                               // We can't find this in our originals. Let's keep it for later.
+                               $possibly_added[] = $entry;
</ins><span class="cx" style="display: block; padding: 0 10px">                         }
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        else {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         }
+
+               // Mark missing strings as possible removals.
+               foreach ( $originals_by_key as $key => $value) {
+                       if ( $value->status != '-obsolete' && is_array( $translations->entries ) && ! array_key_exists( $key, $translations->entries ) ) {
+                               $possibly_dropped[ $key ] = $value;
+                       }
+               }
+               $comparison_array = array_unique( array_merge( array_keys( $possibly_dropped ), array_keys( $obsolete_originals ) ) );
+
+               foreach ( $possibly_added as $entry ) {
+                       $data = array(
+                               'project_id' => $project->id,
+                               'context'    => $entry->context,
+                               'singular'   => $entry->singular,
+                               'plural'     => $entry->plural,
+                               'comment'    => $entry->extracted_comments,
+                               'references' => implode( ' ', $entry->references ),
+                               'status'     => '+active'
+                       );
+                       $data = apply_filters( 'import_original_array', $data );
+
+                       // Search for match in the dropped strings and existing obsolete strings.
+                       $close_original = $this->closest_original( $entry->key(), $comparison_array );
+
+                       // We found a match - probably a slightly changed string.
+                       if ( $close_original ) {
+                               $original = $originals_by_key[ $close_original ];
+
+                               // We'll update the old original...
+                               $this->update( $data, array( 'id' => $original->id ) );
+
+                               // and set existing translations to fuzzy.
+                               $this->set_translations_for_original_to_fuzzy( $original->id );
+
+                               // No need to obsolete it now.
+                               unset( $possibly_dropped[ $close_original ] );
+
+                               $originals_fuzzied++;
+                               continue;
+                       } else { // Completely new string
</ins><span class="cx" style="display: block; padding: 0 10px">                                 GP::$original->create( $data );
</span><span class="cx" style="display: block; padding: 0 10px">                                $originals_added++;
</span><span class="cx" style="display: block; padding: 0 10px">                        }
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                // Mark previously active, but now removed strings as obsolete
-               foreach ( $originals_by_key as $key => $value) {
-                       if ( ! key_exists( $key, $translations->entries ) && '-obsolete' != $value->status ) {
-                               $this->update( array('status' => '-obsolete'), array( 'id' => $value->id ) );
-                               $originals_obsoleted++;
-                       }
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // Mark remaining possibly dropped strings as obsolete.
+               foreach ( $possibly_dropped as $key => $value) {
+                       $this->update( array( 'status' => '-obsolete' ), array( 'id' => $value->id ) );
+                       $originals_obsoleted++;
</ins><span class="cx" style="display: block; padding: 0 10px">                 }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                // Clear cache when the amount of strings are changed
-               if ( $originals_added > 0 || $originals_obsoleted > 0 ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // Clear cache when the amount of strings are changed.
+               if ( $originals_added > 0 || $originals_fuzzied      > 0 || $originals_obsoleted > 0 ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                         gp_clean_translation_sets_cache( $project->id );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                do_action( 'originals_imported', $project->id, $originals_added, $originals_existing, $originals_obsoleted );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         do_action( 'originals_imported', $project->id, $originals_added, $originals_existing, $originals_obsoleted, $originals_fuzzied );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                return array( $originals_added, $originals_existing );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         return array( $originals_added, $originals_existing, $originals_fuzzied, $originals_obsoleted );
</ins><span class="cx" style="display: block; padding: 0 10px">         }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        function set_translations_for_original_to_fuzzy( $original_id ) {
+               $translations = GP::$translation->find_many( "original_id = '$original_id' AND status = 'current'" );
+               foreach ( $translations as $translation ) {
+                       $translation->set_status( 'fuzzy' );
+               }
+       }
+
+       function should_be_updated_with( $data, $original = null ) {
+               if ( ! $original ) {
+                       $original = $this;
+               }
+
+               foreach ( $data as $field => $value ) {
+                       if ( $original->$field != $value ) {
+                               return true;
+                       }
+               }
+               return false;
+       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">         function is_different_from( $data, $original = null ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                if ( !$original ) $original = $this;
-               foreach( $data as $field => $value ) {
-                       if ( $original->$field != $value ) return true;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         if ( ! $original ) {
+                       $original = $this;
</ins><span class="cx" style="display: block; padding: 0 10px">                 }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+               foreach ( $data as $field => $value ) {
+                       if ( $original->$field != $value ) {
+                               return true;
+                       }
+               }
</ins><span class="cx" style="display: block; padding: 0 10px">                 return false;
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        function priority_by_name( $name ) {
</span><span class="cx" style="display: block; padding: 0 10px">                $by_name = array_flip( self::$priorities );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                return isset( $by_name[$name] )? $by_name[$name] : null;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         return isset( $by_name[ $name ] )? $by_name[ $name ] : null;
</ins><span class="cx" style="display: block; padding: 0 10px">         }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+       function closest_original( $input, $other_strings ) {
+               if ( empty( $other_strings ) ) {
+                       return null;
+               }
+
+               $input_length = gp_strlen( $input );
+               $closest_similarity = 0;
+
+               foreach ( $other_strings as $compared_string ) {
+                       $compared_string_length = gp_strlen( $compared_string );
+                       $max_length_diff = apply_filters( 'gp_original_import_max_length_diff', 0.5 );
+
+                       if ( abs( ( $input_length - $compared_string_length ) / $input_length ) > $max_length_diff ) {
+                               continue;
+                       }
+
+                       $similarity = gp_string_similarity( $input, $compared_string );
+
+                       if ( $similarity > $closest_similarity ) {
+                               $closest = $compared_string;
+                               $closest_similarity = $similarity;
+                       }
+               }
+
+               if ( ! isset( $closest ) ) {
+                       return null;
+               }
+
+               $min_score = apply_filters( 'gp_original_import_min_similarity_diff', 0.8 );
+               $close_enough = ( $closest_similarity > $min_score );
+
+               do_action( 'post_string_similiary_test', $input, $closest, $closest_similarity, $close_enough );
+
+               if ( $close_enough ) {
+                       return $closest;
+               } else {
+                       return null;
+               }
+       }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> GP::$original = new GP_Original();
</span></span></pre></div>
<a id="trunkscriptsimportoriginalsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/scripts/import-originals.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/scripts/import-originals.php        2015-04-30 10:04:00 UTC (rev 1031)
+++ trunk/scripts/import-originals.php  2015-05-01 15:12:09 UTC (rev 1032)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -22,8 +22,15 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        $this->error( __("Couldn't load translations from file!") );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                list( $originals_added, $originals_existing ) = GP::$original->import_for_project( $project, $translations );
-               echo sprintf( __("%s new strings were added, %s existing were updated."), $originals_added, $originals_existing )."\n";
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         list( $originals_added, $originals_existing, $originals_fuzzied, $originals_obsoleted ) = GP::$original->import_for_project( $project, $translations );
+               printf(
+                       __( '%1$s new strings added, %2$s updated, %3$s fuzzied, and %4$s obsoleted.' ),
+                       $originals_added,
+                       $originals_existing,
+                       $originals_fuzzied,
+                       $originals_obsoleted
+               );
+               echo "\n";
</ins><span class="cx" style="display: block; padding: 0 10px">         }
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span></span></pre></div>
<a id="trunktteststests_thingstest_thing_originalphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/t/tests/tests_things/test_thing_original.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/t/tests/tests_things/test_thing_original.php        2015-04-30 10:04:00 UTC (rev 1031)
+++ trunk/t/tests/tests_things/test_thing_original.php  2015-05-01 15:12:09 UTC (rev 1032)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -73,6 +73,26 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertEquals( 'baba', $originals_for_project[0]->singular );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        function test_import_should_mark_translation_of_changed_strings_as_fuzzy() {
+               $set = $this->factory->translation_set->create_with_project_and_locale();
+               $original = $this->factory->original->create( array( 'project_id' => $set->project->id, 'status' => '+active', 'singular' => 'baba baba' ) );
+               $translation = $this->factory->translation->create( array( 'translation_set_id' => $set->id, 'original_id' => $original->id, 'status' => 'current' ) );
+               $translations_for_import = $this->create_translations_with( array( array( 'singular' => 'baba baba.' ) ) );
+
+               list( $originals_added, $originals_existing, $originals_fuzzied, $originals_obsoleted ) = $original->import_for_project( $set->project, $translations_for_import );
+
+               $this->assertEquals( 0, $originals_added );
+               $this->assertEquals( 0, $originals_existing );
+               $this->assertEquals( 1, $originals_fuzzied );
+               $this->assertEquals( 0, $originals_obsoleted );
+
+               $current_translations = GP::$translation->find_many( "original_id = '{$original->id}' AND status = 'current'" );
+               $fuzzy_translations = GP::$translation->find_many( "original_id = '{$original->id}' AND status = 'fuzzy'" );
+
+               $this->assertEquals( 0, count( $current_translations ) );
+               $this->assertEquals( 1, count( $fuzzy_translations ) );
+       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">         function test_import_should_remove_from_active_missing_strings() {
</span><span class="cx" style="display: block; padding: 0 10px">                $project = $this->factory->project->create();
</span><span class="cx" style="display: block; padding: 0 10px">                $original = $this->factory->original->create( array( 'project_id' => $project->id, 'status' => '+active' ) );
</span></span></pre>
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